Natural and anthropogenic sources and fate of atmospheric ethylene

Sawada, Sumio; Totsuka, Tsumugu

doi:10.1016/0004-6981(86)90266-0

Cited by 96 publications

(73 citation statements)

References 79 publications

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“…Emission factors for formic and acetic acid are based on enclosure measurements reported by Kesselmeier et al (1997), Kreuzwieser et al (1999), Martin et al (1999) and Kesselmeier (2001) which suggest that emissions of these compounds are small, although with a large uncertainty. Sawada and Totsuka (1986) extrapolated enclosure measurements showing widespread ethene production by plants in most landscapes. Canopy scale fluxes measured by Goldstein et al (1996) above a temperate deciduous forest confirmed that substantial amounts of ethene were released into the atmosphere from this landscape.…”

Section: Model Parametersmentioning

confidence: 99%

The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions

et al. 2012

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Abstract. The Model of Emissions of Gases and Aerosolsfrom Nature version 2.1 (MEGAN2.1) is a modeling framework for estimating fluxes of biogenic compounds between terrestrial ecosystems and the atmosphere using simple mechanistic algorithms to account for the major known processes controlling biogenic emissions. It is available as an offline code and has also been coupled into land surface and atmospheric chemistry models. MEGAN2.1 is an update from the previous versions including MEGAN2.0, which was described for isoprene emissions by Guenther et al. (2006) and MEGAN2.02, which was described for monoterpene and sesquiterpene emissions by Sakulyanontvittaya et al. (2008). Isoprene comprises about half of the total global biogenic volatile organic compound (BVOC) emission of 1 Pg (1000 Tg or 10 15 g) estimated using MEGAN2.1. Methanol, ethanol, acetaldehyde, acetone, α-pinene, β-pinene, t-β-ocimene, limonene, ethene, and propene together contribute another 30 % of the MEGAN2.1 estimated emission. An additional 20 compounds (mostly terpenoids) are associated with the MEGAN2.1 estimates of another 17 % of the total emission with the remaining 3 % distributed among >100 compounds. Emissions of 41 monoterpenes and 32 sesquiterpenes together comprise about 15 % and 3 %, respectively, of the estimated total global BVOC emission. Tropical trees cover about 18 % of the global land surface and are estimated to be responsible for ∼ 80 % of terpenoid emissions and ∼ 50 % of other VOC emissions. Other trees cover about the same area but are estimated to contribute only about 10 % of total emissions. The magnitude of the emissions estimated with MEGAN2.1 are within the range of estimates reported using other approaches and much of the differences between reported values can be attributed to land cover and meteorological driving variables. The offline version of MEGAN2.1 source code and driving variables is available from http://bai.acd.ucar.edu/MEGAN/ and the version integrated into the Community Land Model version 4 (CLM4) can be downloaded from http://www.cesm. ucar.edu/.

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Section: Model Parametersmentioning

confidence: 99%

The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions

et al. 2012

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“…Ethene is primarily destroyed by reaction with OH (Olivella and Sole, 2004), which is rapid, giving ethene a tropospheric lifetime of only 1 to 3 days. Despite covering only 29 % of the Earth's area, the land produces 89 % of the ethene (Sawada and Totsuka, 1986). This is mainly natural, but in urban environments or near fires, ethene from incomplete combustion can dominate.…”

Section: Introductionmentioning

confidence: 99%

Measurements of atmospheric ethene by solar absorption FTIR spectrometry

2018

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Abstract. Atmospheric ethene (C 2 H 4 ; ethylene) amounts have been retrieved from high-resolution solar absorption spectra measured by the Jet Propulsion Laboratory (JPL) MkIV interferometer. Data recorded from 1985 to 2016 from a dozen ground-based sites have been analyzed, mostly between 30 and 67 • N. At clean-air sites such as Alaska, Sweden, New Mexico, or the mountains of California, the ethene columns were always less than 1 × 10 15 molec cm −2 and therefore undetectable. In urban sites such as JPL, California, ethene was measurable with column amounts of 20 × 10 15 molec cm −2 observed in the 1990s. Despite the increasing population and traffic in southern California, a factor 3 decrease in ethene column density is observed over JPL over the past 25 years, accompanied by a decrease in CO. This is likely due to southern California's increasingly stringent vehicle exhaust regulations and tighter enforcement over this period.

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“…Alkenes can be found in a variety of fuels and automobile exhaust, as well as in other industrial and agricultural (biomass burning) processes [20,21]. Biogenic sources of alkenes include emissions from vegetation, soils and the ocean [22]. On the other hand, fatty acids represent some of the most common components found in ambient fine particles originating from multiple sources such as meat cooking, road dust, leaf abrasion and tire wear [23,24].…”

Section: Introductionmentioning

confidence: 99%